OBD-II code · Powertrain (generic, extended)
P25D0 Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 1
The controller cannot drive the park-lock pin that secures the exhaust camshaft phaser on bank 1 in its base position at engine off. Without the lock, the next start can suffer poor combustion or rough idle until the phaser builds oil pressure.
Is it safe to drive with P25D0?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOpen coil in the park-lock solenoid
- PossibleBroken control wire between ECU and solenoid
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Exhaust Cam Phaser B1, Park Lock Solenoid, Wiring Harness
Related codes
- P25D3Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 2
- P25CDIntake Camshaft Actuator Park Lock Control Circuit / Open Bank 2
- P25CEIntake Camshaft Actuator Park Lock Control Circuit Low Bank 2
- P25CFIntake Camshaft Actuator Park Lock Control Circuit High Bank 2
- P25D1Exhaust Camshaft Actuator Park Lock Control Circuit Low Bank 1
- P25D2Exhaust Camshaft Actuator Park Lock Control Circuit High Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.